We explore how to address the challenges of adaptation of water resources systems under changing conditions by supporting flexible, resilient and low-regret solutions, coupled with on-going monitoring and evaluation. This will require improved understanding of the linkages between biophysical and social aspects in order to better anticipate the possible future co-evolution of water systems and society. We also present a call to enhance the dialogue and foster the actions of governments, the international scientific community, research funding agencies and additional stakeholders in order to develop effective solutions to support water resources systems adaptation. Finally, we call the scientific community to a renewed and unified effort to deliver an innovative message to stakeholders. Water science is essential to resolve the water crisis, but the effectiveness of solutions depends, inter alia, on the capability of scientists to deliver a new, coherent and technical vision for the future development of water systems.

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The HYDROMET Integrated Radar Experiment (HIRE) international radar-hydrological experiment was initiated to test the hydrological relevance of different types of weather radars in an urban Mediterranean environment. The experiment involved a vertically pointing X-band radar, an X-band radar performing RHI scans and an S-band radar performing PPI scans. Preliminary analyses of the collected data suggest the success of the experiment, from the scientific point of view.@en